﻿<?xml version="1.0" encoding="utf-8"?>
<blocktwosectionone>
  <!--AM Receivers Terms-->
  <Question1>1. Define selectivity?</Question1>
  	<Answer1>None</Answer1>
  	<Reference1>Student Workbook Page 12, Section 3</Reference1>
  <Question2>2. What test determines the sensitivity of a receiver?</Question2>
  	<Answer2>None</Answer2>
 	 <Reference2>Student Workbook Page 12, Section 3</Reference2>
  <Question3>3. Define selectivity?</Question3>
  	<Answer3>None</Answer3>
  	<Reference3>Student Workbook Page 12, Section 3</Reference3>
  <Question4>4. Define adjacent channels?</Question4>
 	 <Answer4>None</Answer4>
  	<Reference4>Student Workbook Page 12, Section 3</Reference4>
  <Question5>5. What term is used to describe the degree of selectivity a circuit has?</Question5>
  	<Answer5>None</Answer5>
  	<Reference5>Student Workbook Page 12, Section 3</Reference5>
  <Question6>6. What are half power points?</Question6>
  	<Answer6>None</Answer6>
  	<Reference6>Student Workbook Page 12, Section 3</Reference6>
  <Question7>7. What happens to selectivity if the bandwidth increases?</Question7>
  	<Answer7>None</Answer7>
  	<Reference7>Student Workbook Page 12, Section 3</Reference7>
  <Question8>8. Define the process of heterodyning?</Question8>
  	<Answer8>None</Answer8>
 	 <Reference8>Student Workbook Page 12, Section 3</Reference8>
  <Question9>9. What is an example of a non-linear device?</Question9>
  	<Answer9>None</Answer9>
  	<Reference9>Student Workbook Page 12, Section 3</Reference9>
  <Question10>10. Define image frequency?</Question10>
  	<Answer10>None</Answer10>
  	<Reference10>Student Workbook Page 12, Section 3</Reference10>
  <Question11>11. What is the purpose of preselection?</Question11>
  	<Answer11>None</Answer11>
  	<Reference11>Student Workbook Page 12, Section 3</Reference11>
  <Question12>12. What is the purpose of AGC?</Question12>
  	<Answer12>None</Answer12>
  	<Reference12>Student Workbook Page 12, Section 3</Reference12>
  <Question13>13. What is the purpose of the squelch circuit?</Question13>
  	<Answer13>None</Answer13>
  	<Reference13>Student Workbook Page 12, Section 3</Reference13>
  <Question14>14. What is the squelch threshold?</Question14>
  	<Answer14>None</Answer14>
  	<Reference14>Student Workbook Page 12, Section 3</Reference14>
  <!--Advantages of VHF/UHF Frequencies-->
  <Question15>1. What is radio wave propagation?</Question15>
  	<Answer15>None</Answer15>
  	<Reference15>Student Workbook Page 12, Section 3</Reference15>
  <Question16>2. What are the two types of radio waves that pass between a transmitter and receiver?</Question16>
  	<Answer16>None</Answer16>
 	 <Reference16>Student Workbook Page 12, Section 3</Reference16>
  <Question17>3. What frequency band is used for long-range, over the horizon communication?</Question17>
 	 <Answer17>None</Answer17>
 	 <Reference17>Student Workbook Page 12, Section 3</Reference17>
  <Question18>4. What is skip fading?</Question18>
  	<Answer18>None</Answer18>
  	<Reference18>Student Workbook Page 12, Section 3</Reference18>
  <Question19>5. What causes fading of HF signals?</Question19>
  	<Answer19>None</Answer19>
  	<Reference19>Student Workbook Page 12, Section 3</Reference19>
  <Question20>6. What is the most useful portion of the ground wave transmission?</Question20>
  	<Answer20>None</Answer20>
  	<Reference20>Student Workbook Page 12, Section 3</Reference20>
  <Question21>7. What is meant by line-of-sight transmission?</Question21>
  	<Answer21>None</Answer21>
  	<Reference21>Student Workbook Page 12, Section 3</Reference21>
  <Question22>8. What are the advantages of using the VHF and UHF frequency bands?</Question22>
  	<Answer22>None</Answer22>
  	<Reference22>Student Workbook Page 12, Section 3</Reference22>
  <!--The Basic AM Receiver-->
  <Question23>1. What are the four sections of the superheterodyne receiver?</Question23>
  	<Answer23>None</Answer23>
  	<Reference23>Student Workbook Page 12, Section 3</Reference23>
  <Question24>2. What is the purpose of the antenna filter?</Question24>
  	<Answer24>None</Answer24>
  	<Reference24>Student Workbook Page 12, Section 3</Reference24>
  <Question25>3. What are the two purposes of the RF amplifier?</Question25>
  	<Answer25>None</Answer25>
  	<Reference25>Student Workbook Page 12, Section 3</Reference25>
  <Question26>4. What is the purpose of the mixer stage?</Question26>
  	<Answer26>None</Answer26>
  	<Reference26>Student Workbook Page 12, Section 3</Reference26>
  <Question27>5. What stage determines the overall selectivity of the receiver?</Question27>
  	<Answer27>None</Answer27>
  	<Reference27>Student Workbook Page 12, Section 3</Reference27>
  <Question28>6. What characteristics do the IF amplifiers have?</Question28>
  	<Answer28>None</Answer28>
  	<Reference28>Student Workbook Page 12, Section 3</Reference28>
  <Question29>7. What are the outputs of the detector stage?</Question29>
  	<Answer29>None</Answer29>
  	<Reference29>Student Workbook Page 12, Section 3</Reference29>
  <Question30>8. Why are audio filters used in the AF preamplifier?</Question30>
  	<Answer30>None</Answer30>
  	<Reference30>Student Workbook Page 12, Section 3</Reference30>
  <Question31>9. What types of amplifiers are usually used in the AF PA?</Question31>
  	<Answer31>None</Answer31>
  	<Reference31>Student Workbook Page 12, Section 3</Reference31>
  <Question32>10. What is the purpose of the power supply?</Question32>
  	<Answer32>None</Answer32>
  	<Reference32>Student Workbook Page 12, Section 3</Reference32>
</blocktwosectionone>